Gliese 581 b

Gliese 581 b is an exoplanet, the red dwarf Gliese orbits the 581.

Discovery

The planet was discovered by a team of French and Swiss astronomers reported their discovery on 30 November 2005. He is the fifth planet, which was discovered around a red dwarf. The planet was discovered using the HARPS instrument.

Properties

Gliese 581 b is approximately the mass of the planet Neptune, or about 0.05 times Jupiter and 16 times that of Earth. This results in an acceleration of gravity of 22.07 m / s ². The planet orbits its star at a distance of about 0.04 AU and has a radius of about 17,000 kilometers. It is estimated that there is on the planet a temperature of 187 ° C.

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